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How to get only the process ID for a specified process name on Linux?

How to get only the process ID for a specified process name on Linux?

ps -ef|grep java
test 31372 31265  0 13:41 pts/1    00:00:00 grep java

Based on the process id I will write some logic. So how do I get only the process id for a specific process name.

Sample program:

PIDS= ps -ef|grep java
if [ -z "$PIDS" ]; then
echo "nothing"
else
mail [email protected]
fi
Solution

  • You can use:

    ps -ef | grep '[j]ava'

    Or if pgrep is available then better to use:

    pgrep -f java